Back out "Fix NaN error in dynamic quantization in qLinear, re-enable test_quantized_rnn"
Summary:
Original commit changeset: 948a888f5516
(Note: this ignores all push blocking failures!)
Test Plan: Revert
Reviewed By: jamesr66a
Differential Revision: D21269147
fbshipit-source-id: 0204c360ef2c3f28c2b2fbe367eb4cfd77f717c4
